package com.tanhua.mongo.api;

import cn.hutool.core.collection.CollUtil;
import com.tanhua.api.service.UserLocationApi;
import com.tanhua.model.mongo.UserLocation;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.geo.Circle;
import org.springframework.data.geo.Distance;
import org.springframework.data.geo.Metrics;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.geo.GeoJsonPoint;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;
import org.springframework.data.mongodb.core.query.Update;

import java.util.List;

@DubboService
public class UserLocationApiImpl implements UserLocationApi {

    @Autowired
    private MongoTemplate mongoTemplate;

    @Override
    public Boolean updateLocation(Long userId,Double longitude, Double latitude, String addrStr) {
        try {
            Query query = Query.query(Criteria.where("userId").is(userId));
            // 根据用户信息查询地理位置
            UserLocation location = mongoTemplate.findOne(query, UserLocation.class);

            if (location == null) {
                // 条件成立表示用户没有地理信息，
                location = new UserLocation();
                location.setUserId(userId);
                location.setAddress(addrStr);
                location.setLocation(new GeoJsonPoint(longitude, latitude));
                location.setCreated(System.currentTimeMillis());
                location.setUpdated(System.currentTimeMillis());
                location.setLastUpdated(System.currentTimeMillis());

                mongoTemplate.save(location);
            } else {
                // 条件成立失败，更新数据
                Update update = Update.update("location", new GeoJsonPoint(longitude, latitude))
                                .set("address", addrStr)
                                        .set("updated", System.currentTimeMillis())
                                                .set("lastUpdated", location.getUpdated());

                mongoTemplate.updateFirst(query, update, UserLocation.class);
            }

            return true;
        } catch (Exception e) {
            e.printStackTrace();
        }

        return false;
    }

    @Override
    public List<Long> search(Long userId, Double metre) {
        // 根据用户id查询当前的地理位置
        Query query = Query.query(Criteria.where("userId").is(userId));
        UserLocation location = mongoTemplate.findOne(query, UserLocation.class);
        if (location == null) {
            return null;
        }
        //2、已当前用户位置绘制原点
        GeoJsonPoint point = location.getLocation();
        //3、绘制半径
        Distance distance = new Distance(metre / 1000, Metrics.KILOMETERS);
        //4、绘制圆形
        Circle circle = new Circle(point, distance);
        //5、查询
        Query locationQuery = Query.query(Criteria.where("location").withinSphere(circle));
        List<UserLocation> list = mongoTemplate.find(locationQuery, UserLocation.class);
        return CollUtil.getFieldValues(list,"userId",Long.class);
    }
}
